For compound having the formula GaAlCl 4 , the correct option from the following is

For compound having the formula GaAlCl4, the correct option from the following is
  1. Ga is coordinated with CI in GaAlCl4
  2. Ga is more electronegative than AI and is present as a cationic part of the salt GaAlCl4
  3. CI forms bond with both AI and Ga in GaAlCl4
  4. Oxidation state of Ga in the salt GaAlCl4 is +3

Solution

Gallous tetrachloro aluminate (GaAlCl4) exists as Ga+AlCl4-.

Due to the presence of d-orbital in the case of Ga, the shielding effect of the d-orbital electrons is very poor so the size of the Ga atom is smaller than expected and so it can attract the shared pairs of electrons more effectively. Hence, the electronegativity of Ga is more than Al.

 

Asked in: JEE Main 2023 (11 Apr Shift 1)

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